Well I couldn't figure this out so here's what I did -
I exported my address book and calendar.
Purged my /home/dave/.thunderbird directory (I had a back up just in case).
I made sure imap was turned on in gmail.
From there I just started thunderbird and set up the gmail account as per instruction on the internet (it's real easy). Since imap is turned on I got back all of my folders and emails.
I imported the address book and calendar files and...everything works. I can again send emails with thunderbird.
Thanks for the responses. Marking as solved even though I never figured out what caused it.
Last edited by NakedRider; 08-14-2021 at 09:38 PM.
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